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(No Modem 2 Sheets-Sheet 1.

P. G. SUPER. DEVIGE FOR LIGHTING BASBMENTS.

No; 586,251 Patented July 13, 1897.

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(No Model.) 2 Sheets-Sheet 2.

P.O.S OPER. DEVICE FOR LIGHTING BASBMENTS.

No. 586,251. Patented Ju1y'13, 1897.

V UNITED STATES PATENT EEicE.

FRANK C. SOIER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE IJLTXFER PRISM PATENTS COMPANY, OF SAME PLACE.

DEVICE FOR LIGHTING BASEMENTS.

SPECIFICATION forming part of Letters Patent No. 586,251, dated July 13, 1897. Application filed April 20, 1897. Serial No. 632,968. (No model.)

To a II/7007M 11/; 772.0, com: 7 11.: to secure in a room like the basement A a lie it known that I, FRANK C. SOPER, a citimuch greater degree of illumination than can zen of the United States, residing at Chicago, be secured by simply using the prism-tiles in the county of Cook and State of Illinois, which throw the light forward into the room, 5 5 have invented certain new and useful Imas indicated atD in Fig. 1, while at the same provements in Devices for Lighting l3ase time it is not desirable to suspend a vertical ments, of which the following is a specificaprism-plate, which would thus separate, as it tion. were, the basement and the vault from each My invention relates to a device for lightother. I therefore in the case illustrated in re ing basements and the like, and has for its Figs. 1 and 2 place two deflectors, one at each object to provide a new and improved device side, and I place the prism-tiles C so that a for this purpose, of which the following is a portion will throw the light toward one dedescription, reference being had to the aoflector H and a portion toward the other decompanying drawings, wherein fiector II. These deflectors are preferably r 5 Figure 1 is a view of a basement, showing the well-known prism-plates consisting each one form of my device. Fig. 2 is a view of of a series of prism-lights built up in aseries my device as seen above and with parts broken of prism-plates, preferably by electroglazing.

away. Figs. 3 and I are views similar to Fig. A single prism-plate may be used or any 2, showing modified constructions. number, the number and construction de- 20 Like letters refer to like parts throughout pending, of course, upon the conditions to be the several figures. met.

Ais the basement; B, the vault in front of The prism-tiles may be made to throw the the same. light in any given direction, and some of them C C are prism-tiles placed so as to throw may throw the light directly forward, as in- 7 25 the light to the side. dicated in thedrawings. I have not, how- D D are prism-tiles placed so as to throw ever, on this small scale attempted to accuthe light forward. rately figure out or illustrate the angles of G is a prism-plate hung or suspended in the prisms so as to get any given result. I any convenient manner toone side of the am simply attempting to illustrate the mato prism-tiles. I have shown this prism-plate ter diagrammatically, as it were, in order to as suspended in various manners and as actmake my invention clear. ing in some instances as a reflector and in Iclaim other instances allowing the light to pass 1. Adevice for lighting basements and the therethrough and changing the direction of like comprising a series of prism-tiles ara 5 such light by refraction. ranged in a pavement-like bodysubstantially As shown at H in Fig. 2, the prism-plate at right angles to the building, said tiles aracts as a reflector, and as shown at II it acts ranged in groups, one group adapted to throw by refraction. thelight into the room to be illuminated, the

The prism-plates in Fig. 3 both act by reother groups adapted to throw the light on .0 fraction, but are placed at different angles, opposite sides, in combination with deflectors as shown. placed at the sides and adapted to receive In Fig. 4.- the prism-tiles J are so positioned the light from such side-throwing prism-tiles as to throw the light diagonally forward. and to direct it forward into the room to be This construction is particularly adapted to lighted. 5 be used when the pier K or the like is located 2. A device forlighting basements and the in front of the prism-tiles, so as to obstruct like comprising a series of prism-tiles arthe light when itis thrown straight forward. ranged in a pavement-likebody substantially I have spoken of basements, but of course at right angles to the building, said tiles arany other room to be illuminated can be opranged in groups, one group adapted to throw 5c erated upon in the same way where the con the light into the room to be illuminated, the ditions are appropriate. It is often desirable other groups to throw the light on opposite other groups adapted to throw the light on opposite sides, in combination with transparent uisnrplates placed at the sides and adapted to receive light from such side-throwing prisurtiles and to direct it forward into the lOOlll to be lighted.

F 'i-ANK C. SUPER.

\Vituesses:

FRANCIS W. PARKER, 'imn'riu 0. Sins. 

